21033334331320 has 32 divisors (see below), whose sum is σ = 47326382626320. Its totient is φ = 8413088331520.

The previous prime is 21033334331297. The next prime is 21033334331389. The reversal of 21033334331320 is 2313343333012.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6277162 + ... + 9026041.

Almost surely, 2^{21033334331320} is an apocalyptic number.

21033334331320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21033334331320 is an abundant number, since it is smaller than the sum of its proper divisors (26293048295000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21033334331320 is a wasteful number, since it uses less digits than its factorization.

21033334331320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15337575 (or 15337571 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 31.

Adding to 21033334331320 its reverse (2313343333012), we get a palindrome (23346677664332).

The spelling of 21033334331320 in words is "twenty-one trillion, thirty-three billion, three hundred thirty-four million, three hundred thirty-one thousand, three hundred twenty".